stackoverflow.com - robtex.com
stackoverflow.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 198.252.206.1🇺🇸 Cloudflare198.252.206.0/24 BYOIP ✓ In HTTPS hints | ||||||
| PTR | stackoverflow.com | ||||||
| NS | damian.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::a29f:2c32🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | damian.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c332🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | damian.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2332🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | damian.ns.cloudflare.com | ||||||
| A | 108.162.195.50🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | damian.ns.cloudflare.com | ||||||
| A | 162.159.44.50Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | damian.ns.cloudflare.com | ||||||
| A | 172.64.35.50🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | damian.ns.cloudflare.com | ||||||
| NS | sureena.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:267e🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sureena.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c27e🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | sureena.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:227e🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | sureena.ns.cloudflare.com | ||||||
| A | 108.162.194.126🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sureena.ns.cloudflare.com | ||||||
| A | 162.159.38.126Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sureena.ns.cloudflare.com | ||||||
| A | 172.64.34.126🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sureena.ns.cloudflare.com | ||||||
| MX | aspmx.l.google.com ⭐ | ||||||
| A | 2607:f8b0:4023:c03::1a🇺🇸 Google2607:f8b0::/32 | ||||||
| PTR | dy-in-f26.1e100.net | ||||||
| A | 74.125.137.26🇺🇸 Google74.125.137.0/24 | ||||||
| PTR | dy-in-f26.1e100.net | ||||||
| MX | alt1.aspmx.l.google.com(5) | ||||||
| A | 2607:f8b0:4023:2801::1b🇺🇸 Google2607:f8b0::/32 | ||||||
| PTR | lcausi-in-f27.1e100.net | ||||||
| A | 192.178.128.26🇺🇸 Google192.178.128.0/24 | ||||||
| PTR | lcausi-in-f26.1e100.net | ||||||
| MX | alt2.aspmx.l.google.com(5) | ||||||
| A | 2a00:1450:400b:c02::1b🇮🇪 Google2a00:1450:400b::/48 | ||||||
| PTR | dj-in-f27.1e100.net | ||||||
| A | 172.253.116.26🇺🇸 Google172.253.116.0/24 | ||||||
| PTR | dj-in-f26.1e100.net | ||||||
| MX | alt3.aspmx.l.google.com(10) | ||||||
| A | 2607:f8b0:4023:1015::1a🇺🇸 Google2607:f8b0::/32 | ||||||
| PTR | yudfwta-in-f26.1e100.net | ||||||
| A | 172.253.135.27🇺🇸 Google172.253.135.0/24 | ||||||
| PTR | yudfwta-in-f27.1e100.net | ||||||
| MX | alt4.aspmx.l.google.com(10) | ||||||
| A | 2a00:1450:400c:c00::1b🇧🇪 Google2a00:1450:400c::/48 | ||||||
| PTR | ws-in-f27.1e100.net | ||||||
| PTR | ws-in-x1b.1e100.net | ||||||
| A | 173.194.76.26🇺🇸 Google173.194.76.0/24 | ||||||
| PTR | ws-in-f26.1e100.net | ||||||
| TXT | MS=ms52592611 | ||||||
| TXT | ZOOM_verify_AbkNwz5bBl0eurcDKyhhuk | ||||||
| TXT | adobe-idp-site-verification=25ba5203f3687c9cd6ee3223ee5de1528917828d1da3ebd3b... | ||||||
| TXT | anthropic-domain-verification-q70207=cKyy0llXkD10O4rDQpWz8tQ5K | ||||||
| TXT | apple-domain-verification=O9jlnJXAQ7sNSZqC | ||||||
| TXT | atlassian-domain-verification=byLeZgl3MIcfOqwWuMhq8Fhr/1zem/jIaouJegvDZbBKUU5... | ||||||
| TXT | cursor-domain-verification-sb0ayf=Pk6AyptQuTpzpcuSlfYGWloxv | ||||||
| TXT | docker-verification=d65aee54-9091-4ceb-b792-61f5d5804050 | ||||||
| TXT | docusign=4262531d-29f4-4a62-9f33-ae9f66f5247b | ||||||
| TXT | google-site-verification=2Bi6SYw5skkRexdtdLPL2gpxeIhLxnYVqITVP9Htl3w | ||||||
| TXT | google-site-verification=ctogLnZNAdc_CXq8yOhODMLpmugGynjxKecKHDz4oL8 | ||||||
| TXT | google-site-verification=o3EMam8yBGo1yEjyybIiZcOunGHOQKpo8JmOtp9n1BU | ||||||
| TXT | google-site-verification=rdWtMbplKjbRHGr2dNONfwkqithlUvjr3u6i8QEz_mo | ||||||
| TXT | ibmid=4e7cbbb3-5f12-40b4-96c7-5b064347b822 | ||||||
| TXT | make-domain-verification=eec31159-f381-4f38-9d89-e59123dd023e | ||||||
| TXT | onetrust-domain-verification=0d9d67f856334905a54256085a5768b3 | ||||||
| TXT | onetrust-domain-verification=e445562296a64c649ae3d520230b8c4c | ||||||
| TXT | openai-domain-verification=dv-GLNufzbWDzAq0fDXHD6jxeCK | ||||||
| TXT | v=MCPv1; k=ed25519; p=VhBofO8RaYvTvHT7q5tTty+HQeCU8R6h5Y8k/sj20So= | ||||||
| TXT | v=spf1 ip4:52.38.191.241 include:_spf1.stackoverflow.com ~all | ||||||
| HTTPS | HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 198.252.206.1 | ||||||
| SOA | damian.ns.cloudflare.comdns@cloudflare.com serial=2402094755 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1776943917 | ||||||
rank #117 in the tld
This domain, "stackoverflow.com", is a popular website used by developers and programmers worldwide. It operates as a question and answer forum for professional and enthusiast programmers. The name "Stack Overflow" refers to a type of error that can occur in computer programming. The site is a useful resource for finding solutions to coding problems, learning new programming languages, and getting advice on best coding practices.WOT: SAFE (94/100)
📈 Tranco rank: #512
Stack Overflow is the largest online community for programmers, founded in 2008 by Jeff Atwood and Joel Spolsky. With over 100 million monthly visitors, Stack Overflow has become essential infrastructure for software development.
Beyond the Q&A site, Stack Overflow offers Stack Overflow for Teams, Stack Overflow Talent, and Advertising. The Stack Exchange network extends the Q&A model to hundreds of topics.
Stack Overflow's infrastructure handles massive traffic from developers worldwide. The platform was famous for running on surprisingly modest infrastructure relative to its traffic.
DNS for stackoverflow.com uses Cloudflare's authoritative DNS infrastructure. The platform's Q&A content is delivered globally through CDN for fast page loads.
PTR for
Subdomains
br.stackoverflow.com |
facebook.stackoverflow.com |
talent.stackoverflow.com |
beta.stackoverflow.com |
business.stackoverflow.com |
ja.stackoverflow.com |
www.stackoverflow.com |
dev.stackoverflow.com |
mail.stackoverflow.com |
chat.stackoverflow.com |
meta.stackoverflow.com |
contests.stackoverflow.com |
clc.stackoverflow.com |
ru.stackoverflow.com |
rads.stackoverflow.com |
jobs.stackoverflow.com |
blog.stackoverflow.com |
careers.stackoverflow.com |
pt.stackoverflow.com |
es.stackoverflow.com |
email.stackoverflow.com |
Same first word
Similar names
DNS History
33 records (8 active, 25 former)
○NScf-dns01.stackoverflow.com2015-09-03 → 2016-06-04 · 4 obs
● 2016-06-04 18:58:22
○ 2016-06-08 15:11:36
○ 2026-04-23 11:48:02
○NScf-dns02.stackoverflow.com2015-09-03 → 2016-06-04 · 4 obs
● 2016-06-04 18:58:22
○ 2016-06-08 15:11:36
○ 2026-04-23 11:48:02
●NSdamian.ns.cloudflare.com2026-02-16 → 2026-04-23 · 3 obs
● 2026-02-16 11:52:14
● 2026-04-23 11:48:02
○NSns-1033.awsdns-01.org2016-06-08 → 2021-09-17 · 119 obs
● 2016-06-08 15:11:36
● 2017-01-06 11:02:26
○ 2017-01-08 02:45:54
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○ 2020-01-14 15:57:36
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● 2020-03-12 15:55:48
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○ 2021-01-04 15:54:36
● 2021-02-07 21:49:06
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● 2021-05-10 12:33:58
● 2021-09-17 19:12:12
○ 2026-02-16 11:52:14
○ 2026-04-23 11:48:02
○NSns-1543.awsdns-00.co.uk2016-06-08 → 2017-01-06 · 5 obs
● 2016-06-08 15:11:36
● 2017-01-06 11:02:26
○ 2017-01-08 02:45:54
○ 2026-04-23 11:48:02
○NSns-358.awsdns-44.com2016-06-08 → 2021-09-17 · 5 obs
● 2016-06-08 15:11:36
● 2021-09-17 19:12:12
○ 2026-02-16 11:52:14
○ 2026-04-23 11:48:02
○NSns-739.awsdns-28.net2016-06-08 → 2017-01-06 · 5 obs
● 2016-06-08 15:11:36
● 2017-01-06 11:02:26
○ 2017-01-08 02:45:54
○ 2026-04-23 11:48:02
○NSns-cloud-e1.googledomains.com2017-01-08 → 2021-09-17 · 118 obs
● 2017-01-08 02:45:54
○ 2017-01-10 02:50:10
○ 2017-01-14 19:08:44
● 2017-01-17 16:56:40
● 2017-02-19 23:42:04
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● 2017-05-19 04:00:24
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● 2017-05-27 09:47:54
○ 2017-05-29 16:13:42
● 2017-06-02 06:46:22
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○ 2017-07-09 14:24:30
● 2017-07-21 18:16:16
● 2017-07-22 13:20:00
○ 2017-07-23 15:55:54
● 2017-07-25 03:57:56
● 2017-08-12 07:28:10
○ 2017-08-29 08:01:46
● 2017-09-03 08:29:44
● 2017-09-30 09:51:28
○ 2017-10-01 16:07:32
○ 2017-10-22 11:37:06
● 2017-11-07 16:21:10
● 2017-11-22 04:53:06
○ 2017-11-24 01:01:50
● 2017-12-07 08:57:28
○ 2017-12-09 01:43:28
● 2018-01-04 19:16:30
○ 2018-01-16 18:34:08
● 2018-02-19 06:59:02
● 2018-05-01 20:20:10
○ 2018-05-04 06:07:12
○ 2018-05-14 07:54:50
● 2018-05-16 03:00:04
○ 2018-05-23 02:54:34
● 2018-05-29 17:23:10
● 2018-07-04 20:36:02
○ 2018-07-06 21:04:50
● 2018-07-19 06:05:16
● 2018-09-24 13:02:18
○ 2018-10-01 15:40:36
● 2018-10-26 14:56:48
● 2019-03-05 20:53:48
○ 2019-03-17 16:01:38
○ 2019-04-10 21:04:28
● 2019-04-28 15:03:20
○ 2019-05-28 15:23:28
● 2019-06-02 14:06:06
○ 2019-06-16 14:08:34
● 2019-07-14 17:23:52
○ 2019-07-21 23:36:52
● 2019-08-08 23:46:02
○ 2019-08-29 14:11:04
● 2019-09-03 15:00:16
○ 2019-09-10 14:17:58
● 2019-09-17 13:28:24
● 2019-09-19 12:59:54
○ 2019-09-26 11:39:12
● 2019-09-28 10:37:14
○ 2019-09-30 08:13:30
○ 2019-10-18 13:43:32
● 2019-10-21 23:54:08
○ 2019-10-23 14:22:56
○ 2019-10-31 11:01:08
● 2019-11-02 02:22:00
○ 2019-11-12 10:37:38
● 2019-11-13 17:27:14
● 2019-12-14 15:27:54
○ 2019-12-17 16:00:26
● 2019-12-27 13:46:34
● 2020-01-14 15:57:36
○ 2020-01-21 17:30:00
● 2020-02-08 13:19:04
● 2020-02-14 12:02:54
○ 2020-02-21 15:07:00
● 2020-03-05 21:45:24
● 2020-03-09 19:20:30
○ 2020-03-12 15:55:48
○ 2020-03-21 07:53:10
● 2020-04-07 22:22:52
○ 2020-04-09 00:19:22
○ 2020-05-27 16:16:04
● 2020-05-28 21:19:16
● 2020-06-04 03:08:52
○ 2020-06-24 06:27:20
○ 2020-07-09 04:21:26
● 2020-07-22 09:40:06
● 2020-10-05 11:53:00
○ 2020-10-30 23:15:38
● 2020-11-09 16:46:24
● 2020-11-12 15:41:26
○ 2020-12-10 15:57:10
● 2020-12-15 20:23:12
○ 2020-12-16 23:14:12
● 2020-12-18 08:47:26
● 2021-01-04 15:54:36
○ 2021-02-07 21:49:06
● 2021-04-19 05:13:02
○ 2021-05-10 12:33:58
○ 2021-06-29 21:04:28
● 2021-09-17 19:12:12
○ 2026-02-16 11:52:14
○ 2026-04-23 11:48:02
○NSns-cloud-e2.googledomains.com2017-01-08 → 2021-09-17 · 5 obs
● 2017-01-08 02:45:54
● 2021-09-17 19:12:12
○ 2026-02-16 11:52:14
○ 2026-04-23 11:48:02
●NSsureena.ns.cloudflare.com2026-02-16 → 2026-04-23 · 3 obs
● 2026-02-16 11:52:14
● 2026-04-23 11:48:02
●MXalt1.aspmx.l.google.com2015-09-03 → 2026-04-23 · 2 obs
● 2026-04-23 11:48:02
●MXalt2.aspmx.l.google.com2015-09-03 → 2026-04-23 · 2 obs
● 2026-04-23 11:48:02
●MXalt3.aspmx.l.google.com2016-01-20 → 2026-04-23 · 3 obs
● 2016-01-20 01:57:24
● 2026-04-23 11:48:02
●MXalt4.aspmx.l.google.com2016-01-20 → 2026-04-23 · 3 obs
● 2016-01-20 01:57:24
● 2026-04-23 11:48:02
●MXaspmx.l.google.com2015-09-03 → 2026-04-23 · 2 obs
● 2026-04-23 11:48:02
○MXaspmx2.googlemail.com2015-09-03 → 2016-01-18 · 4 obs
● 2016-01-18 13:37:28
○ 2016-01-20 01:57:24
○ 2026-04-23 11:48:02
○MXaspmx3.googlemail.com2015-09-03 → 2016-01-18 · 4 obs
● 2016-01-18 13:37:28
○ 2016-01-20 01:57:24
○ 2026-04-23 11:48:02
○A104.16.102.852015-09-03 → 2015-10-04 · 4 obs
● 2015-10-04 05:11:42
○ 2015-10-09 11:58:52
○ 2026-04-23 11:48:02
○A104.16.103.852015-09-03 → 2015-10-04 · 4 obs
● 2015-10-04 05:11:42
○ 2015-10-09 11:58:52
○ 2026-04-23 11:48:02
○A104.16.104.852015-09-03 → 2015-10-04 · 4 obs
● 2015-10-04 05:11:42
○ 2015-10-09 11:58:52
○ 2026-04-23 11:48:02
○A104.16.105.852015-09-03 → 2015-10-04 · 4 obs
● 2015-10-04 05:11:42
○ 2015-10-09 11:58:52
○ 2026-04-23 11:48:02
○A104.16.106.852015-09-03 → 2015-10-04 · 4 obs
● 2015-10-04 05:11:42
○ 2015-10-09 11:58:52
○ 2026-04-23 11:48:02
○A104.16.33.2492015-11-08 → 2016-06-04 · 5 obs
● 2015-11-08 09:01:24
● 2016-06-04 18:58:22
○ 2016-06-08 15:11:36
○ 2026-04-23 11:48:02
○A104.16.34.2492015-11-08 → 2016-06-04 · 5 obs
● 2015-11-08 09:01:24
● 2016-06-04 18:58:22
○ 2016-06-08 15:11:36
○ 2026-04-23 11:48:02
○A104.16.35.2492015-11-08 → 2016-06-04 · 5 obs
● 2015-11-08 09:01:24
● 2016-06-04 18:58:22
○ 2016-06-08 15:11:36
○ 2026-04-23 11:48:02
○A104.16.36.2492015-11-08 → 2016-06-04 · 5 obs
● 2015-11-08 09:01:24
● 2016-06-04 18:58:22
○ 2016-06-08 15:11:36
○ 2026-04-23 11:48:02
○A104.16.37.2492015-11-08 → 2016-06-04 · 5 obs
● 2015-11-08 09:01:24
● 2016-06-04 18:58:22
○ 2016-06-08 15:11:36
○ 2026-04-23 11:48:02
○A151.101.1.692016-06-08 → 2021-09-17 · 5 obs
● 2016-06-08 15:11:36
● 2021-09-17 19:12:12
○ 2026-02-16 11:52:14
○ 2026-04-23 11:48:02
○A151.101.129.692016-06-08 → 2021-09-17 · 5 obs
● 2016-06-08 15:11:36
● 2021-09-17 19:12:12
○ 2026-02-16 11:52:14
○ 2026-04-23 11:48:02
○A151.101.193.692016-06-08 → 2021-09-17 · 5 obs
● 2016-06-08 15:11:36
● 2021-09-17 19:12:12
○ 2026-02-16 11:52:14
○ 2026-04-23 11:48:02
○A151.101.65.692016-06-08 → 2021-09-17 · 5 obs
● 2016-06-08 15:11:36
● 2021-09-17 19:12:12
○ 2026-02-16 11:52:14
○ 2026-04-23 11:48:02
●A198.252.206.12026-02-16 → 2026-04-23 · 3 obs
● 2026-02-16 11:52:14
● 2026-04-23 11:48:02
○A198.252.206.162015-10-09 → 2015-11-06 · 5 obs
● 2015-10-09 11:58:52
● 2015-11-06 13:44:26
○ 2015-11-08 09:01:24
○ 2026-04-23 11:48:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| stackoverflow.com | sureena.ns.cloudflare.com, damian.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:108.162.194.126
NS records: sureena.ns.cloudflare.com, damian.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for stackoverflow.com (unsigned zone)
⏱️ Timing
Total: 256ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 198.252.206.1 |
| NS | 2 | damian.ns.cloudflare.com, sureena.ns.cloudflare.com |
| MX | 5 | aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)... |
| TXT | 20 | MS=ms52592611, ZOOM_verify_AbkNwz5bBl0eurcDKyhhuk... |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h2"] |
| SOA | 1 | damian.ns.cloudflare.com dns.cloudflare. |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (sureena.ns.cloudflare.com, sureena.ns.cloudflare.com, sureena.ns.cloudflare.com...)
Related
Analysis
Hierarchy
stackoverflow.com is a parent of br.stackoverflow.com, facebook.stackoverflow.com, talent.stackoverflow.com, beta.stackoverflow.com, business.stackoverflow.com and a few other host names.
IP Addresses
stackoverflow.com resolves to a single IP address: 198.252.206.1.
Other host names including expressionengine.meta.stackexchange.com, bicycles.meta.stackexchange.com, co-testvpn.stackexchange.com, mathematica.stackexchange.com and puzzling.stackexchange.com share IP numbers with stackoverflow.com.
Name Servers
stackoverflow.com's delegation uses two name servers, damian.ns.cloudflare.com and sureena.ns.cloudflare.com.
stackoverflow.com shares the same name server setup as other domains, for example nationale-omwisselactie.nl, babylemonade.es, serverfault.com, superuser.com and alteredu.be.
stackoverflow.com at least partially shares name servers with other domains, including citiform.com, zgaqjypx.com, futuregenie.in, planet2day.com and panindiatours.com.
these name servers are commonly used with wells.ns.cloudflare.com, plato.ns.cloudflare.com, simone.ns.cloudflare.com and maleah.ns.cloudflare.com.
Host names with six IP numbers:
damian.ns.cloudflare.com points to: 2606:4700:58::a29f:2c32, 2803:f800:50::6ca2:c332, 2a06:98c1:50::ac40:2332, 108.162.195.50, 162.159.44.50 and 172.64.35.50.
sureena.ns.cloudflare.com points to: 2606:4700:50::a29f:267e, 2803:f800:50::6ca2:c27e, 2a06:98c1:50::ac40:227e, 108.162.194.126, 162.159.38.126 and 172.64.34.126.
Mail Servers
stackoverflow.com is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.
The mail servers for stackoverflow.com are shared with other domains, for instance ns500737.ns500599.ns500724.ns500724.ns500724.ns500737.ns500737.ns500599.ns500737.ns500583.ns500599.ns500697.ns500697.ns500682.ns500583.yummyflingsfinder.com, ns500754.ns500742.ns500742.ns500754.ns500731.ns500731.ns500731.ns500705.ns500704.ns500705.ns500678.ns500291.ns500671.lusty(0x736c7574)z.com, ns500754.ns500731.ns500754.ns500671.ns500671.ns500671.ns500688.ns500704.ns500649.ns500666.ns500653.ns500153.tenderladiesbz.com, ns500759.ns500698.ns500698.ns500698.ns500759.ns500698.ns500736.ns500698.ns500735.ns500735.ns500698.ns500735.ns500698.ns500576.ns500619.ns500576.ns500652.trackreceptor.com and ns500742.ns500671.ns500731.ns500731.ns500742.ns500705.ns500705.ns500705.ns500688.ns500666.ns500666.ns500131.lustychickser.com.
these mail servers are commonly used with aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and aspmx5.googlemail.com.
Host names with two IP numbers:
aspmx.l.google.com points to 2607:f8b0:4023:c03::1a and 74.125.137.26.
alt1.aspmx.l.google.com points to 2607:f8b0:4023:2801::1b and 192.178.128.26.
alt2.aspmx.l.google.com points to 2a00:1450:400b:c02::1b and 172.253.116.26.
alt3.aspmx.l.google.com points to 2607:f8b0:4023:1015::1a and 172.253.135.27.
alt4.aspmx.l.google.com points to 2a00:1450:400c:c00::1b and 173.194.76.26.